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Siemens Auxiliary Contact Block: 1NO/1NC, Side Mount - Siemens Auxiliary Contacts
SiemensSiemens Auxiliary Contacts

Siemens Auxiliary Contact Block: 1NO/1NC, Side Mount

The SIEMENS Auxiliary Contact Block (MPN 3RH29211DA11) is a side-mount accessory for SIRIUS 3RH2 contactor relays, offering 1NO/1NC contact configuration. This auxiliary contact block expands the switching capacity…

SKU 3G-OTH-38108

Brand
Siemens
Item
Auxiliary Contact Block: 1NO/1NC, Side Mount
Category
Siemens Auxiliary Contacts
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Technical Specifications

Siemens
Manufacturer Part Number
3RH29211DA11
Compatible with Series
SIRIUS 3RH2 Contactor Relays
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS Auxiliary Contact Block (MPN 3RH29211DA11) is a side-mount accessory for SIRIUS 3RH2 contactor relays, offering 1NO/1NC contact configuration. This auxiliary contact block expands the switching capacity of compatible Siemens contactor relays.

Frequently Asked Questions

What is the SIEMENS 3RH29211DA11 auxiliary contact block used for?

The SIEMENS 3RH29211DA11 is a side-mount auxiliary contact block for SIRIUS 3RH2 contactor relays. It adds one normally open and one normally closed contact to expand switching capacity in industrial control panels, motor starters, and automation systems.

What are the specifications of the SIEMENS 3RH29211DA11?

The SIEMENS 3RH29211DA11 is a side-mounted auxiliary contact block with 1NO/1NC contacts. It is compatible with SIRIUS 3RH2 contactor relays and has a manufacturer part number of 3RH29211DA11. It expands the switching capacity of the relay.

Where to buy the SIEMENS 3RH29211DA11 worldwide?

3G Electric supplies the SIEMENS 3RH29211DA11 auxiliary contact block worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this Siemens part.

How to install the SIEMENS 3RH29211DA11 auxiliary contact block?

The SIEMENS 3RH29211DA11 side-mounts directly onto a SIRIUS 3RH2 contactor relay. Ensure the relay is de-energized before installation. Clip the block onto the side of the relay until it locks. Wire the NO/NC contacts according to your control circuit diagram.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens siemens auxiliary contacts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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